EPSG:10518

CGVD28 height to CGVD2013a(1997) height (2)

Attributes

Geodetic CRS: CGVD28 height

Datum: Canadian Geodetic Vertical Datum of 1928

Data source: EPSG

Information source: Geodetic Survey Division, Natural Resources Canada.

Revision date: 2024-10-09

Scope: Change of height to a different vertical reference surface.

Remarks: Equal to HT2_1997 hybrid geoid model minus CGG2013a geoid model (CT 9983 minus CT 10111). Specified interpolation CRS is NAD83(CSRS)v3, but NAD83(CSRS)v2 or any later realization may be used without error. See also CT 10617 from CGVD28(v2.0) height.

Method: Vertical change by geoid grid difference (NRCan)

Area of use: Canada - onshore - Alberta; British Columbia; Manitoba south of 59°N; New Brunswick; Newfoundland, Labrador between 52°50’N and 54°30’N; Northwest Territories south west of a line between 60°40’N, 110°W and the coast at 132°W; Nova Scotia; Ontario south of 52°20'N; Prince Edward Island; Quebec - mainland south of 55°N and west of 64°W, north of 55°N between 70°W and 66°W, coastal area between 66°W and 64°W, and Anticosta island; Saskatchewan south of 58°30’N; Yukon.

Description: (0,)

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SimpleMap
Canada - onshore - Alberta; British Columbia; Manitoba south of 59°N; New Brunswick; Newfoundland, Labrador between 52°50’N and 54°30’N; Northwest Territories south west of a line between 60°40’N, 110°W and the coast at 132°W; Nova Scotia; Ontario south of 52°20'N; Prince Edward Island; Quebec - mainland south of 55°N and west of 64°W, north of 55°N between 70°W and 66°W, coastal area between 66°W and 64°W, and Anticosta island; Saskatchewan south of 58°30’N; Yukon.

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Definition: OGC Well Known Text 2 (2019)

COORDINATEOPERATION["CGVD28 height to CGVD2013a(1997) height (2)",
    VERSION["NR-Can HT2 1997"],
    SOURCECRS[
        VERTCRS["CGVD28 height",
            VDATUM["Canadian Geodetic Vertical Datum of 1928"],
            CS[vertical,1],
                AXIS["gravity-related height (H)",up,
                    LENGTHUNIT["metre",1]],
            ID["EPSG",5713]]],
    TARGETCRS[
        VERTCRS["CGVD2013a(1997) height",
            VDATUM["Canadian Geodetic Vertical Datum of 2013 (CGG2013a) epoch 1997",
                ANCHOREPOCH[1997]],
            CS[vertical,1],
                AXIS["gravity-related height (H)",up,
                    LENGTHUNIT["metre",1]],
            ID["EPSG",20035]]],
    METHOD["Vertical change by geoid grid difference (NRCan)",
        ID["EPSG",1126]],
    PARAMETERFILE["Geoid model difference file","HT2_1997_CGG2013a.byn"],
    INTERPOLATIONCRS[
        GEOGCRS["NAD83(CSRS)v3",
            DATUM["North American Datum of 1983 (CSRS) version 3",
                ELLIPSOID["GRS 1980",6378137,298.257222101,
                    LENGTHUNIT["metre",1]],
                ANCHOREPOCH[1997]],
            PRIMEM["Greenwich",0,
                ANGLEUNIT["degree",0.0174532925199433]],
            CS[ellipsoidal,2],
                AXIS["geodetic latitude (Lat)",north,
                    ORDER[1],
                    ANGLEUNIT["degree",0.0174532925199433]],
                AXIS["geodetic longitude (Lon)",east,
                    ORDER[2],
                    ANGLEUNIT["degree",0.0174532925199433]]]],
    OPERATIONACCURACY[0.05],
    USAGE[
        SCOPE["Change of height to a different vertical reference surface."],
        AREA["Canada - onshore - Alberta; British Columbia; Manitoba south of 59°N; New Brunswick; Newfoundland, Labrador between 52°50’N and 54°30’N; Northwest Territories south west of a line between 60°40’N, 110°W and the coast at 132°W; Nova Scotia; Ontario south of 52°20'N; Prince Edward Island; Quebec - mainland south of 55°N and west of 64°W, north of 55°N between 70°W and 66°W, coastal area between 66°W and 64°W, and Anticosta island; Saskatchewan south of 58°30’N; Yukon."],
        BBOX[41.67,-141.01,69.81,-52.54]],
    ID["EPSG",10518],
    REMARK["Equal to HT2_1997 hybrid geoid model minus CGG2013a geoid model (CT 9983 minus CT 10111). Specified interpolation CRS is NAD83(CSRS)v3, but NAD83(CSRS)v2 or any later realization may be used without error. See also CT 10617 from CGVD28(v2.0) height."]]

Definition: PROJ.4

+proj=vgridshift +grids=ca_nrc_HT2_1997_CGG2013a.tif +multiplier=-1

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:10518","+proj=vgridshift +grids=ca_nrc_HT2_1997_CGG2013a.tif +multiplier=-1");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "Transformation",
    "name": "CGVD28 height to CGVD2013a(1997) height (2)",
    "source_crs": {
        "type": "VerticalCRS",
        "name": "CGVD28 height",
        "datum": {
            "type": "VerticalReferenceFrame",
            "name": "Canadian Geodetic Vertical Datum of 1928"
        },
        "coordinate_system": {
            "subtype": "vertical",
            "axis": [
                {
                    "name": "Gravity-related height",
                    "abbreviation": "H",
                    "direction": "up",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 5713
        }
    },
    "target_crs": {
        "type": "VerticalCRS",
        "name": "CGVD2013a(1997) height",
        "datum": {
            "type": "VerticalReferenceFrame",
            "name": "Canadian Geodetic Vertical Datum of 2013 (CGG2013a) epoch 1997",
            "anchor_epoch": 1997
        },
        "coordinate_system": {
            "subtype": "vertical",
            "axis": [
                {
                    "name": "Gravity-related height",
                    "abbreviation": "H",
                    "direction": "up",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 20035
        }
    },
    "interpolation_crs": {
        "type": "GeographicCRS",
        "name": "NAD83(CSRS)v3",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "North American Datum of 1983 (CSRS) version 3",
            "anchor_epoch": 1997,
            "ellipsoid": {
                "name": "GRS 1980",
                "semi_major_axis": 6378137,
                "inverse_flattening": 298.257222101
            }
        },
        "coordinate_system": {
            "subtype": "ellipsoidal",
            "axis": [
                {
                    "name": "Geodetic latitude",
                    "abbreviation": "Lat",
                    "direction": "north",
                    "unit": "degree"
                },
                {
                    "name": "Geodetic longitude",
                    "abbreviation": "Lon",
                    "direction": "east",
                    "unit": "degree"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 8240
        }
    },
    "method": {
        "name": "Vertical change by geoid grid difference (NRCan)",
        "id": {
            "authority": "EPSG",
            "code": 1126
        }
    },
    "parameters": [
        {
            "name": "Geoid model difference file",
            "value": "HT2_1997_CGG2013a.byn",
            "id": {
                "authority": "EPSG",
                "code": 1063
            }
        }
    ],
    "accuracy": "0.05",
    "scope": "Change of height to a different vertical reference surface.",
    "area": "Canada - onshore - Alberta; British Columbia; Manitoba south of 59°N; New Brunswick; Newfoundland, Labrador between 52°50’N and 54°30’N; Northwest Territories south west of a line between 60°40’N, 110°W and the coast at 132°W; Nova Scotia; Ontario south of 52°20'N; Prince Edward Island; Quebec - mainland south of 55°N and west of 64°W, north of 55°N between 70°W and 66°W, coastal area between 66°W and 64°W, and Anticosta island; Saskatchewan south of 58°30’N; Yukon.",
    "bbox": {
        "south_latitude": 41.67,
        "west_longitude": -141.01,
        "north_latitude": 69.81,
        "east_longitude": -52.54
    },
    "id": {
        "authority": "EPSG",
        "code": 10518
    },
    "remarks": "Equal to HT2_1997 hybrid geoid model minus CGG2013a geoid model (CT 9983 minus CT 10111). Specified interpolation CRS is NAD83(CSRS)v3, but NAD83(CSRS)v2 or any later realization may be used without error. See also CT 10617 from CGVD28(v2.0) height."
}

Definition: MapServer - MAPfile

PROJECTION
	"proj=vgridshift"
	"grids=ca_nrc_HT2_1997_CGG2013a.tif"
	"multiplier=-1"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=vgridshift +grids=ca_nrc_HT2_1997_CGG2013a.tif +multiplier=-1">
	<Layer srs="+proj=vgridshift +grids=ca_nrc_HT2_1997_CGG2013a.tif +multiplier=-1">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 10518, 'EPSG', 10518, '+proj=vgridshift +grids=ca_nrc_HT2_1997_CGG2013a.tif +multiplier=-1', 'None');